Select Chapter Topics:
Q. No.The main nitrogenous waste product of insects and birds is
| 1. | urea | 2. | uric acid |
| 3. | ammonia | 4. | carbon dioxide |
Subtopic: Nitrogenous Excretory Products |
97%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Nitrogenous Excretory Products |
96%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Match the excretory structures in Column-I with the organisms in Column-II:
Options:
1. A-P, B-Q, C-S, D-R
2. A-Q, B-S, C-R, D-P
3. A-S, B-R, C-P, D-Q
4. A-R, B-P, C-Q, D-S
| Column-I (Structure) | Column-II (Organism) | ||
| A. | Nephridia | P. | Insects |
| B. | Malpighian Tubules | Q. | Vertebrates |
| C. | Kidneys | R. | Earthworms |
| D. | Flame Cells | S. | Flatworms |
1. A-P, B-Q, C-S, D-R
2. A-Q, B-S, C-R, D-P
3. A-S, B-R, C-P, D-Q
4. A-R, B-P, C-Q, D-S
Subtopic: Nitrogenous Excretory Products |
95%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Protonephridia | P | Prawn |
| B | Nephridia | Q | Cockroach |
| C | Malpighian tubules | R | Earthworm |
| D | Green gland | S | Amphioxus |
| A | B | C | D | |
| 1. | S | R | Q | P |
| 2. | S | R | P | Q |
| 3. | P | Q | S | R |
| 4. | Q | P | R | S |
Subtopic: Nitrogenous Excretory Products |
95%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Terrestrial organisms, like mammals, adapted to excrete urea instead of ammonia primarily because:
| 1. | Ammonia can be stored for long periods in the body without toxicity. |
| 2. | Urea requires less water for excretion compared to ammonia, conserving water. |
| 3. | Urea can be excreted directly from the skin without using the kidneys. |
| 4. | Urea is more toxic than ammonia and requires less energy to produce. |
Subtopic: Nitrogenous Excretory Products |
94%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Urea is a preferred nitrogenous waste product over ammonia because:
| 1. | It is produced more rapidly than ammonia in metabolism. |
| 2. | It is less toxic and requires less water for excretion. |
| 3. | It requires no energy for synthesis. |
| 4. | It does not affect blood pH. |
Subtopic: Nitrogenous Excretory Products |
94%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Uricotelic organisms are advantageous in xeric environments because:
| 1. | They excrete ammonia through gills |
| 2. | Uric acid dissolves readily in plasma |
| 3. | Uric acid is excreted in solid form with minimum water loss |
| 4. | Uric acid formation conserves sodium ions |
Subtopic: Nitrogenous Excretory Products |
95%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Uricotelism is found in
1. Fishes, and fresh protozoans.
2. Birds, reptiles and insects
3. Frogs, and toads
4. Mammals, and birds
Subtopic: Nitrogenous Excretory Products |
94%
Level 1: 80%+
Hints
Animals excreting nitrogen, mainly as ammonia, are mostly aquatic because ammonia:
| 1. | Can be stored safely in body fluids |
| 2. | Requires large amount of water for elimination |
| 3. | Is non-toxic, even in concentrated form |
| 4. | Is converted to urea before excretion |
Subtopic: Nitrogenous Excretory Products |
94%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
If amount of water used form elimination of NH3, urea and uric aicd is X, Y and Z respectively, then which is correct?
1. X>Y>Z
2. X>Z>Y
3. X<Y<Z
4. Y>Z>X
Subtopic: Nitrogenous Excretory Products |
93%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.